Light attachment.



C. A. B. HALVORSON, JR. & J. T BEECHLYN.

LIGHT ATTACHMENT.

APPLICATION FILED JULY 3. 1917.

Patented Dec. 10, 1918.

2 SHEETSSHEET 3.

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C. A. B. HALVORSON, JR. (KL 1. T. BEECHLYN' LIGHT ATTACHMENT.

AP-PLICATTON FILED JULY 3.1912

LZS'Y QQSG Patented Dec. 10,'T918.

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' UNITED STATS CROMWELL A. B. HALVOBSON. JR... AND JOHN 'INIBEECHLYN, OF SAUGUS, MASSACHU- SETTS, ASSIGNORS TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

[0 all whom it may concern Be it known that we, Cnonwem. A. B. HALvonsox, J1., and Jonx T. Bni-zcnm'x, citizens of the United States, residing at Saugus, county of Essex, State of l\lassachusctts, have invented certain new and useful Improvements in Light Attachments, of which the following is a specification.

Our invention. relates to a lamp guard and the method of making the same, and has for its object the improvement in the manufacture of a device of this character. The guard made in accordance with our invention may also be of such form that it may at, the same time reflect the light from the protected lamp in the desired direction.

Our invention will best be understood by reference to the accompanying drawings, in which we have shown one embodiment of our invention, and in which: Figure l is a plan view of a sheet metal blank stamped to form, when properly expanded, a lamp guard embodying one forntot' our invention; Fig. 2 is a perspective View showing the parts of Fig. 1 expanded; Figl 3 is a side view partly in section showing the guard of Fig. surrounding an incandescent lamp bulb and secured in place by attachment to the lamp fixture, and Fig.4 is a view similar to Fig. 3 showing a slightly different. form of our invention, in which parts of the guard serve also as reflectors.

Referring to the drawing, the blank shown in. Fig. 1, is a circular sheet metal disk A,

from which certain parts are removed so as to form the central ring 10 and the spider arms 11 extending from the ring 10 outwardly. 'In addition to this a number of spaced narrow slots or incisions are made in the outer part of the disk in such form and extent as to mark off the rings 1213 and 14,

concentric with the central ring 10. Of these incisions those marked 15, 16, 17 and 18 are concentric circular arcs, and the incisions 19 20 are radial, connecting one end of each of the incisions 15 and 16 with the next adjacent ends of theincisions 17 and, 18,. In the drawing 12 sets of circular arc incisions are indicated, but a greater or smaller num ber may be used.

The segmental strips included between each pair of concentric incisions 15, 17, constitute tongues 21, which connect the outermost ring 12 with the next inner ring 13,-

LIGHT ATTACHMENT.

Specification of Letters Patent. Patented Dec, 10, 1918 Application filed July 3. 1917. Serial No. 178,485.

and the segmental strips included between the. lamp guard, it is only necessary to ex- I pand the metal, either by hand or by a die, by holding the outer ring 12 stationary and forcing the other sections away from it to bring it into the form shown in Fig. 2.

In Fig. 3 the lamp guard is shown surrounding an incandescent lamp bulb 23 which is to be protected and is attached to a lamp fixture 2%. In this form the rings 10, 12, 13 and ll are substantially horizontal so as to intercept but a negligible amount of light. The connecting strips 21, and 11 are also parallel to the rays of light so that. the latter are not substantially obstructed thereby. The device embodying our invention illustrated in -Figs. 1, 2 and 3 is pri marily intended as a lamp guard though it. will of course be understood thattl'ic flat rings may, if desired, be arranged to reflect the light. lVhen this is desired however we prefer to make the device of the form shown in Fig. 4 in which we have'shown 'a lamp guard formed in the same manner as that shown in Figs. 1, 2 and 3 with the exception that the flat rings are made wider than those of Figs. 1, 2 and 3 and are so positioned with reference to the emitted light as to reflect all or a part of it in a desired direction. In the structure shown in this figure, the reflecting rings 25 and 26 located above the light source are preferably arranged horizontally, so that upwardly directed rays of light 30 and 31 will be reflected by the rings 25 and 26 downwardly in a useful direction, as shown. The reflecting rings 28 and .29 below the light source are preferably arranged at an angle to the horizontal so that downwardly directed rays of light 32 and 33 which impinge upon the reflecting rings 28 I and 29 will be reflected below the horizontal 27 which is in substantially the same horizontal plane as the light source, is narrower than the remaining reflecting rings, and is not intended to re-direct the light but is arranged parallel to the rays so not to obstruct the same.

lYhile we have here shown the reflecting rings or vanes arranged to reflect the light at a small angle below the horizontal, it will of course be understood that they may be arranged to retiect the light in any desired direction.

While we have described our invention as embodying a concrete structure and as operating in a specific manner in accordance with the provisions of the patent statutes, it should be understood that we do not limit our invention thereto, since various modifications thereof will suggest themselves to those skilled in the art without departing from the spirit of our invention, the scope of which is set forth in the annexed claimsw llhat. we claim as new and desire to secure by Letters Patent of the United States, is,-

l. A lamp guard comprising a plurality of vertically spaced flat and substantially horizontally disposed rings, and tongues or strips integral with and spacing the rin A combined lamp guard and reflector comprising a plurality of vertically spaced, substantially tlat rin forming an inclosure tor the light source and adapted to reflect the lighttherefrom, the rings being con memes nected together by strips integral with the reflecting rings.

3. In emnbiiuition, a light source, and a combined lamp guard and reflector surrounding the same and comprising a plurality of substantially fiat substai'itially horizontally disposed reflecting rings connected together by integral strips.

4. in combination, a lamp bulb, and a combined guard and reflector therefor conipulsinga plurality of substantially flat reflecting rings surrounding the bulb, the reflecting sur faces of which are positioned to reflect. the intercepted light downwardly in the desired direction, the rings being coir nected together by integral strips.

53. In combination. a light source, and a combined lamp guard and reflector surrounding: the sani and comprising a plurality ot substantially flat; retlecting rings connected together by integral strips, the reflecting rings above the light source being substantially horizontal and those below the light source at an angle to the horizontal.

ln witness whereof, we have hereunto set our hands this Oth day of June, L917.

0 \Xlllillhh A. ll. HALVORSON, JR. JOHN T- BEECHLYN. 

